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Theft Deterrent System Diagnostic System Check

  1. Connect scan tool to DLC located under steering column. If scan tool powers up, go to next step. If scan tool does not power up, go to TEST A: SCAN TOOL DOES NOT POWER UP under SYSTEM TESTS in BODY CONTROL MODULES - CORVETTE article.
  2. Turn ignition on. Attempt to establish communication with Body Control Module (BCM), Powertrain Control Module (PCM), Driver Door Module (DDM) and Passenger Door Module (PDM). If scan tool communicates with these modules, go to next step. If scan tool does not communicate with these modules, go to TEST B: SCAN TOOL DOES COMMUNICATE WITH CLASS 2 DEVICE under SYSTEM TESTS in BODY CONTROL MODULES - CORVETTE article.
  3. Select control module display DTCs function on scan tool for BCM, PCM, DDM and PCM. If scan tool displays DTCs, go to next step. If scan tool does not display any DTCs, diagnose by symptom. See SYMPTOM INDEX  table under SYSTEM TESTS.
  4. Check for communication DTCs. These DTCs will begin with "U". If no "U" DTCs exist, go to next step. If any "U" DTC exists, go to TEST B: SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE under SYSTEM TESTS in BODY CONTROL MODULES - CORVETTE article.
  5. If scan tool displays DTCs P0601, P0602, P0604 or P0606, go to appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If these DTCs are not set, go to next step.
  6. If scan tool displays DTC B0605 or B1000, perform appropriate test under DIAGNOSTIC TESTS in BODY CONTROL MODULES - CORVETTE article. If scan tool does not display DTCs B0605 or B1000, go to next step.
  7. If scan tool displays DTCs B2282-B2285, P0562, P0563, P1637 or P1638, see appropriate GENERATORS & REGULATORS article in STARTING & CHARGING SYSTEMS. If these DTCs are not displayed, see DIAGNOSTIC TROUBLE CODE DEFINITIONS  .
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